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DUPLEX PERCUSSION HAND FIRE BXTINGUISHER. No. 392,671. Patented Nov. 13, 1888.

N. PETERS, Pfiuln'mhbgnphar. Wnhinglon. DC.

EDlVAl tl) A. GALBRAITH, OF BOSTON,

MASSACHUSETTS, ASSIGNOR 'OF ONE- lIALF TO PAUL 1. TODD, OF NEW YORK, N. Y.

DUPLEX PERCUSSION HAND FIRE EXTlNGUISI-IER.

SPECIFICATION forming part of Letters Patent No. 392,671, dated November 13, 1888.

Application filed Oelobcr 22, 1 85.

T aZZ whom it may concern:

Be it known that I, EDWARD A. GALBRAITH, a citizen of the United States, and a resident of Boston, in the county of Suffolk and State of 5 Massachusetts, have invented certain new and useful Improvements in Duplex Percussion Hand Fire-Extinguishers, of which the following is a specification.

Myinvcntion relates especially to hand fire- 1 extinguishers made of glass, and has for its object the provision of a cheap and simple device which shall be particularly effective in operation.

The invention consists, essentially, in a double spherical bottle for containing the chemicals, one or each of said spherical portions containing a heavy slug or hard coinpact body adapted and arranged to insure the breaking of the bottle when the extinguisher is thrown against either a hard or soft substance, all of which will be hereinafter first fully described, and then pointed out in the claim.

In the drawings, Figure l is a side view of my improved extinguisher having but one opening for filling and sealing, and Fig. 2 is a like View of an extinguisher provided with an opening in each extremity. Fig. 3 is a cross-section through one of the bulbs or 0 spheres. Figs. 1 and 5 are detailed. views of one of the slugs.

Like letters of reference, wherever they occur, indicate corresponding parts in all the figures.

The ordinary bottle now in use, termed handgrenade, used in connection with chemicals for subduing incipient fires, is defective, in that if thrown into or upon anything soft it will not break and accomplish the end for which it is intended. My device completely overcomes this objection, as it consists of two spherical bulbs, A, made of glass or other fragile material, said bulbs being connectcd together by a tubular handle, B, ad-

5 mitting the flow of the chemicals from one bulb to the other. The bulbs or chambers are provided with slugs 0, made of metal or other suitable material.

In use the extinguisher is taken by the han- 0 die, keeping it in a horizontal position, and thrown in the direction of the fire. Coming in contact with any object, its course is an Serial No. 180,575. (No mndohl rested. The slugs in each bulb will be brought in violent contact with the sides of the bulbs, creating a percutient action, breaking the bulbs and allowing the chemicals to be liberated upon the fire.

The bulbs or spheres may be sealed at one or both extremities of the extinguisher, as preferred, and as the extinguisher must always lie in a horizontal position the ends where sealed will always be covered with the solution inclosed therein, thereby preventing the deterioration or evaporation of the chemicals.

By the form of receptacle herein described one of the bulbs or spheres may be taken in the hand and the other broken. The contents of one portion of bulb of the extinguisher are thus first released, while the contents of the remaining unbroken portion serve as a container, from which the chemical may be sprinkled or distributed upon any place or in any other manner or at any other time desired.

I am aware that a chemical lire-extinguishing grenade has been provided with a granulated or powdered solid or solids primarily intended to distribute or spread the-liquid when the vessel was fractured, and in the instance referred to it was conjectured that the granulated substance assisted in fracturing the vessel when thrown; but it was a matter of great uncertainty and doubt, and consequently the liberation of the liquid was not always effected. By the employment of a heavy compact solid in the form of a slug, as herein described, the fracture of the vessel when thrown is of great certainty and the consequent liberation of the liquid, therefore, of little or no doubt.

Having now fully described my invention, what I claim as new therein, and desire to secure by Letters Patent, is

A receptacle or holder of a chemical fireextinguisher consisting of two bulbs or spheres of glass united by a tubular portion, and a heavy slug or slugs located within the same, substantially as and for the purpose set forth.

Signed at Boston, in the county of Suffolk and State of Massachusetts, this 9th day of June, A. D. 1885.

EDWARD A. GALBEAITH.

\Vitnesses:

FRANK L. MoVnY, STEPHEN J. MOOARTHY. 

